Question

For which interval(s) is f(x)=3x^3-16x+2 increasing or decreasing?

Answer 1

You could find f'(x).
Then find where f'>0 (this is where f is increasing)
Then find where f'<0 (this is where f is decreasing)

Answer 2

Graph comes like this.. lol and Hai...

Answer 3

@haleyelizabeth2017 Which means it's increasing...lol

Answer 4

lol I have to find the intervals...

Answer 5

@haleyelizabeth2017 have you found the critical numbers yet?

Answer 6

No, still working on it.

Answer 7

Do I set f(x) to 0 and solve for x?

Answer 8

To find critical numbers you solve f'(x)=0 for x.

Answer 9

not f(x)=0

Answer 10

f'(x)?

Answer 11

yes derivative of f

Answer 12

do you know any calculus?

Answer 13

or you suppose to graph it in your calculator and say where the function is increasing or decreasing?

Answer 14

I do not know any calculus lol...

Answer 15

Well how do they expect you to answer this? Calculator right?

Answer 16

I think so

Answer 17

we need to find these numbers a and b